- spl_slab_reclaim() 'continue' changed back to 'break' from commit
37db7d8cf9. The original was correct,
I have added a comment to ensure this does not happen again.
- spl_slab_reclaim() further optimized by moving the destructor call
in spl_slab_free() outside the skc->skc_lock. This minimizes the
length of time the spin lock is held, allows the destructors to
be invoked concurrently for different objects, and as a bonus makes
it safe (although unwise) to sleep in the destructors.